package com.atguigu.web;

import com.atguigu.pojo.Book;
import com.atguigu.pojo.Page;
import com.atguigu.service.BookService;
import com.atguigu.service.Impl.BookServiceImpl;
import com.atguigu.utils.WebUtils;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @ClassName ClientBookServlet
 * @Description TODO
 * @Author 周轩霆
 * @Date 2022/4/20 14:46
 **/

public class ClientBookServlet extends BaseServlet {
    private BookService bookService = new BookServiceImpl();


    protected void page(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        //1.获取请求的参数 pageNo,pageSize
        int pageNo = WebUtils.parseInt(req.getParameter("pageNo"), 1);
        int pageSize = WebUtils.parseInt(req.getParameter("pageSize"), Page.PAGE_SIZE);

        //2.调用bookService.page(pageNo,pageSize)方法:page对象
        Page<Book> page = bookService.page(pageNo, pageSize);
        page.setUrl("client/bookServlet?action=page");
        //3.保存page对象到Request域中
        req.setAttribute("page", page);
        //4.请求转发到pages/manager/book_manager.jsp
        req.getRequestDispatcher("/pages/client/index.jsp").forward(req, resp);

    }

    protected void pageByPrice(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        //1.获取请求的参数 pageNo,pageSize
        int pageNo = WebUtils.parseInt(req.getParameter("pageNo"), 1);
        int pageSize = WebUtils.parseInt(req.getParameter("pageSize"), Page.PAGE_SIZE);
        int min = WebUtils.parseInt(req.getParameter("min"), 0);
        int max = WebUtils.parseInt(req.getParameter("max"), Integer.MAX_VALUE);
        //2.调用bookService.page(pageNo,pageSize)方法:page对象
        Page<Book> page = bookService.pageByPrice(pageNo, pageSize, min, max);
        StringBuilder sb = new StringBuilder("client/bookServlet?action=pageByPrice");
        if (req.getParameter("min") != null) {
            sb.append("&min=").append(req.getParameter("min"));

        }
        if (req.getParameter("max") != null) {
            sb.append("&max=").append(req.getParameter("max"));
        }
        page.setUrl(sb.toString());
        //3.保存page对象到Request域中
        req.setAttribute("page", page);
        //4.请求转发到pages/manager/book_manager.jsp
        req.getRequestDispatcher("/pages/client/index.jsp").forward(req, resp);

    }
}
